Super Telefoto drop in filters

[Rupp1]

The Canon drop in filters that come with their super-telefoto lenses come with a clear insert. As far as I can tell (I don't want to break anything), the clear material is not removable. Doesn't having another substance to pass through harm the quality of the pictures? Is the clear glass removable? If I'm not using the circular polarizing filter, do I want to use a drop in for screw in filters, but without a filter?

It seems to be that the clear material is just one more thing that can gather dirt? Can someone help me out on this?

Thanks.

 

[LDS]

The Canon drop in filters that come with their super-telefoto lenses come with a clear insert.

AFAIK that's part of the optical design and should not be removed.

 

[wtlloyd]

This is 100% correct.


[quote
AFAIK that's part of the optical design and should not be removed.
[/quote]

 

[Loswr]

As stated, the drop-in holder that comes with the supertele lenses is part of the optical design and should be left in place. It's a holder for gelatin filters, probably not something you're going to use all that often, if at all (I never have).